Joke writers have a tough time with President Trump. He creates so many opportunities for jokes that they have little to do. Or he says something which is too difficult to decipher, and it may or may not be funny. One such occasion was the use of the word “bigly” which is supposed to be a new word he invented.

However, experts have concluded that it was a wrong transcription of the more common “Big league”, particularly as his brand of New York English was not understood by most. More on this here:

The humorous possibilities in Cholmondoley being pronounced as Chumly was not lost on music-hall comedians of a century ago, who were noted for their low level of humour. Some examples can be seen here: